Objective: Describe the psychosocial aspects of male infertility at the hospital of the Sino-Guinean Friendship. Patients and method: It is a prospective study of a descriptive type covering a period of 6 months. The ...Objective: Describe the psychosocial aspects of male infertility at the hospital of the Sino-Guinean Friendship. Patients and method: It is a prospective study of a descriptive type covering a period of 6 months. The study covered 17 patients, all received for a desire to conceive after at least one year of regular sexual intercourse without contraception. The data were collected from patient interviews using a pre-established questionnaire. Results: The average age of the patients was 32.07 years with extremes of 23 years and 42 years. During this study, 64.70% of patients were no longer participating in community ceremonies. The patients’ relationships with their spouse and family deteriorated in 52.94% and 47.06%, respectively. Conversely, relations with the family of origin remained unchanged in 70.59 percent of cases. The reduction in economic activity was by 13 patients (76.48%). Conclusion: Male infertility causes a real psychic earthquake in men with its corollaries of negative feelings. The rather complex moral repercussions of male infertility affect not only the individual, his/her partner, and family, but also economic activity.展开更多
Background:Social distancing may affect athletes,training,causing negative effects on mental and physical health.Objective:This study therefore aimed to characterize the perception of Brazilian athletes about their ph...Background:Social distancing may affect athletes,training,causing negative effects on mental and physical health.Objective:This study therefore aimed to characterize the perception of Brazilian athletes about their physical and psychosocial aspects,sleep quality and coping strategies during the quarantine of the coronavirus disease 2019(COVID-19)pandemic.Methods:This was a cross-sectional study with online survey,performed with Brazilian athletes(amateur and professional)over 18 years.The main outcomes measures assessed were physical and psychosocial aspects,sleep quality and coping strategies.Results:A total of 214 athletes were included.The average weekly hours of training during the quarantine was 4.71±3.71 h,of which 64.5%athletes(138/214)were oriented by medical staff during training.For 52.8%(113/214)of athletes,training intensity during the quarantine was different/very different from the intensity before the quarantine.79.4%athletes(170/214)reported moderate to extreme difficulties in keeping the same level of training during the quarantine.77.1%athletes(165/214)had moderate to extreme anxiety and each of the athletes had concern about his or her athletic career future,including return to the sport.72.9%athletes(156/214)reported change in sleep schedule during the quarantine period.Conclusion:The quarantine period during COVID-19 pandemic negatively affected the athlete^perception about training routine,since athletes reported reduction in training hours and training intensity.Overall,the athletes reported that they were moderately to extremely anxious.They also had concerns about their career in the future,as well as concerns regarding return to sport.展开更多
Aspect’s extraction is a critical task in aspect-based sentiment analysis,including explicit and implicit aspects identification.While extensive research has identified explicit aspects,little effort has been put for...Aspect’s extraction is a critical task in aspect-based sentiment analysis,including explicit and implicit aspects identification.While extensive research has identified explicit aspects,little effort has been put forward on implicit aspects extraction due to the complexity of the problem.Moreover,existing research on implicit aspect identification is widely carried out on product reviews targeting specific aspects while neglecting sentences’dependency problems.Therefore,in this paper,a multi-level knowledge engineering approach for identifying implicit movie aspects is proposed.The proposed method first identifies explicit aspects using a variant of BiLSTM and CRF(Bidirectional Long Short Memory-Conditional Random Field),which serve as a memory to process dependent sentences to infer implicit aspects.It can identify implicit aspects from four types of sentences,including independent and three types of dependent sentences.The study is evaluated on a largemovie reviews dataset with 50k examples.The experimental results showed that the explicit aspect identification method achieved 89%F1-score and implicit aspect extraction methods achieved 76%F1-score.In addition,the proposed approach also performs better than the state-of-the-art techniques(NMFIAD andML-KB+)on the product review dataset,where it achieved 93%precision,92%recall,and 93%F1-score.展开更多
Principles which teachers should adhere to in second language class are based on the synthesis of linguistic,cultural and competent aspects.This paper first puts forward linguistic,cultural and competent aspects of se...Principles which teachers should adhere to in second language class are based on the synthesis of linguistic,cultural and competent aspects.This paper first puts forward linguistic,cultural and competent aspects of second language teaching.Then,the principles which teachers should adhere to in second language class are introduced.Finally,the synthesis implication for second language teaching is presented.展开更多
目的探讨ASPECTs评分联合ASITN/SIR侧支循环评分模式评估前循环急性大动脉脑梗死患者超时间窗血管内治疗的临床效果。方法收集52例超时间窗急性大动脉闭塞脑梗死患者为研究组,以本中心63例标准治疗窗内患者为对照组,在三系统同轴下使用...目的探讨ASPECTs评分联合ASITN/SIR侧支循环评分模式评估前循环急性大动脉脑梗死患者超时间窗血管内治疗的临床效果。方法收集52例超时间窗急性大动脉闭塞脑梗死患者为研究组,以本中心63例标准治疗窗内患者为对照组,在三系统同轴下使用颅内血栓抽吸系统、支架取栓装置进行机械取栓治疗,纵向对比2组术后90 d良好恢复率(mRS≤2分)、安全性(症状性颅内出血转化、病死率),研究组间横向对比有效性,主要对比手术前后NIHSS评分。结果研究组与对照组患者术前NIHSS评分差异无统计学意义(P>0.05)。研究组与对照组术中mTICI分级血管再通率分别为90.4%(47/52)、92.1%(58/63),2组比较差异无统计学意义(P>0.05);2组术后良好恢复率(90 d mRS≤2分)[分别为42.3%(22/52)、40%(25/63)]、安全性[研究组症状性颅内出血转化、病死率分别为13.5%(7/52)、15.4%(8/52),对照组分别为11.1%(6/63)、12.7%(8/63)],2组比较差异均无统计学意义(P>0.05)。结论在ASPECTs评分联合ASITN/SIR侧支循环评估模式下急性缺血性脑卒中超时间窗血管内治疗临床疗效具有可行性。展开更多
Cancers, malignant melanoma and sarcomas of the skin represent the most common group of malignancies in humans. The main treatment method of almost all skin cancers and subcutaneous tissue tumours is surgery, which co...Cancers, malignant melanoma and sarcomas of the skin represent the most common group of malignancies in humans. The main treatment method of almost all skin cancers and subcutaneous tissue tumours is surgery, which consists of complete removal of a neoplastic lesion, with an adequate margin of healthy tissue. Radiotherapy plays an adjuvant role in this process, meaning complementing of the surgical procedure. This study compared four methods of irradiation treatment of cancer located in the skin or in subcutaneous tissues: contact brachytherapy, conventional orthovoltage therapy, electron beam conformal teleradiotherapy and IMRT dynamically shaped photonic beams conformal teleradiotherapy. In order to compare the methods and techniques of surface radiotherapy, following specific objectives were formulated. At the beginning in order to compare the scopes of the absorbed doses at different tissue depths, an analysis of parameters describing particular beams or radiation source has been performed—the curves for the absorbed-dose depth drop-offs. Doses distribution in tissue-like phantoms stimulating homogeneous cuboidal tissue block has been determined. A quality comparison of dose distribution in 2D and 3D treatment planning system for contact brachytherapy application has been made. The dose distribution for electron beam in the system has been determined. Conformal plannings for electron beam treatment, contact brachytherapy applicator treatment and 4 photon beams treatment optimized in IMRT technology have been performed. Dose distribution has been performed for the irradiated female patient within the well chest—the target included the recurrence area in the post-operative scar. The radiation therapy with X-rays has actually been completely eliminated from skin cancer and subcutaneous tissue radiotherapy by the electrons generated in linear accelerators, contact brachytherapy HDR and by high-energy photons used in conformal techniques, ex. IMRT. It is because the residual dose beyond the target is the highest for single X-ray beam. Although in brachytherapy HDR a rapid dose drop-off is observed, 5 cm from its normalization level for the target the residual radiation remains at the level of several percent. So, both X-rays beam radiation and brachytherapy in skin cancer treatment is connected with the administration of the dose with a high gradient in the health tissues. The dose distribution for photon conformal techniques IMRT or for electron radiation looks different. There with the dose normalization at the level of 90% or 85% we deal with the dose layer, the division does not exceed 15% of heterogeneity.展开更多
This study investigates the dominant modes of variability in monthly and seasonal rainfall over the India-China region mainly through Empirical Orthogonal Function (EOF) analysis. The EOFs have shown that whereas the ...This study investigates the dominant modes of variability in monthly and seasonal rainfall over the India-China region mainly through Empirical Orthogonal Function (EOF) analysis. The EOFs have shown that whereas the rainfall over India varies as one coherent zone, that over China varies in east-west oriented bands. The influence of this banded structure extends well into India.Relationship of rainfall with large scale parameters such as the subtropical ridge over the Indian and the western Pacific regions, Southern Oscillation, the Northern Hemispheric surface air temperature and stratospheric winds have also been investigated. These results show that the rainfall over the area around 40°N, 110°E over China is highly related with rainfall over India. The subtropical ridge over the Indian region is an important predictor over India as well an over the northern China region. '展开更多
Schizophrenia is a severe mental illness which is associated with significant consequences for both the patients and their relatives. Due to chronicity of the illness, the relatives of patients of schizophrenia have t...Schizophrenia is a severe mental illness which is associated with significant consequences for both the patients and their relatives. Due to chronicity of the illness, the relatives of patients of schizophrenia have to bear the main brunt of the illness. Studies across the world have evaluated various aspects of caregiving and caregivers such as burden, coping, quality of life, social support, expressed emotions, and psychological morbidity. In general the research has looked at caregiving as a negative phenomenon, however, now it is increasingly recognised that caregiving is not only associated with negative consequences only, also experience subjective gains and satisfaction. This review focus on the conceptual issues, instruments available to assess the positive aspects of caregiving and the various correlates of positive aspects of caregiving reported in relation to schizophrenia. The positive aspect of caregiving has been variously measured as positive caregiving experience, caregiving satisfaction, caregiving gains and finding meaning through caregiving scale and positive aspects of caregiving experience. Studies suggests that caregivers of patients with schizophrenia and psychotic disorders experience caregiving gains(in the form of becoming more sensitive to persons with disabilities, clarity about their priorities in life and a greater sense of inner strength), experience good aspects of relationship with the patient, do have personal positive experiences. Some of the studies suggest that those who experience greater negative caregiving experience also do experience positive caregiving experience.展开更多
Peanut is an energy dense food item and it contains a substantial amount of fat,proteins,carbohydrate,both fat soluble and water soluble vitamins,minerals and phytochemicals.Peanuts are consumed worldwide due to its h...Peanut is an energy dense food item and it contains a substantial amount of fat,proteins,carbohydrate,both fat soluble and water soluble vitamins,minerals and phytochemicals.Peanuts are consumed worldwide due to its high nutritional value and pleasant or unique flavor after roasting or boiling.The lipid,protein and carbohydrate not only provide energy,but also provide essential nutrients for normal body functions such as body fat and muscle buildup.Vitamins are needed for normal cell function,growth,development,disease prevention and act as coenzymes during the production of energy.Due to the high nutrient contents of peanuts,they have been used to combat malnutrition in most developing countries.Epidemiologic studies have associated nut consumption with a reduced incidence of cardiovascular heart diseases and gallstones in both genders and diabetes in women.Limited evidence also suggests beneficial effects on hypertension,cancer,and inflammation.The health risk associated with peanut consumption is allergy in developed countries.The review discusses the health aspects,including allergy,of peanut consumption as they related to the chemical composition of peanuts using literatures published in past two decades with exceptions of a few older articles.展开更多
The hydrothermal behavior of air inside a solar channel heat exchanger equipped with various shaped ribs is analyzed numerically.The bottom wall of the exchanger is kept adiabatic,while a constant value of the tempera...The hydrothermal behavior of air inside a solar channel heat exchanger equipped with various shaped ribs is analyzed numerically.The bottom wall of the exchanger is kept adiabatic,while a constant value of the temperature is set at the upper wall.The duct is equipped with a flat rectangular fin on the upper wall and an upstream V-shaped baffle on the lower wall.Furthermore,five hot wall-attached rib shapes are considered:trapezoidal,square,triangular pointing upstream(type Ⅰ),triangular pointing downstream(type Ⅱ),and equilateral-triangular(type Ⅲ)cross sections.Effects of the flow rates are also inspected for various Reynolds numbers in the turbulent regime(1.2×10^(4)-3.2×10^(4)).The highest performance(η)value is given for the Ⅱ-triangular rib case in all Re values,while the square-shaped ribs show a significant decrease in the η along the achieved Re range.The η value at Remax is 2.567 for the Ⅱ-triangular roughness case.Compared with the other simulated cases,this performance is decreased by about 3.768%in the case of Ⅰ-triangular ribs,15.249% in the case of Ⅲ-triangular ribs,20.802% in the case of trapezoidal ribs,while 27.541% in the case of square ribs,at the same Remax.Also,a comparison ismade with air-heat exchangers that have non-rough walls and contain cross-shaped VGs presented previously,in order to highlight the effectiveness of the rough surface presence in the baffled and finned channels.The obtained results indicated that the triangular-shaped rib(type Ⅱ)has the most significant hydrothermal behavior than the other cases.This indicates the necessity of roughness heat transfer surfaces for finned and baffled channels to improve significantly the performance of the air-heat exchangers they contain.展开更多
A method of dealing with two-target problem in terms of coordinate transformation and differential game is presented in this paper. It has analysed the capture region, escape region and danger region. This approach is...A method of dealing with two-target problem in terms of coordinate transformation and differential game is presented in this paper. It has analysed the capture region, escape region and danger region. This approach is helpful to a pilot to possess the favourable position in an air-to-air combat in plane.展开更多
In this paper, we will address common psychological reactions to disability such as anxiety, depression, denial, and anger in the framework of a stage model. In addition, this paper will discuss specific societal aspe...In this paper, we will address common psychological reactions to disability such as anxiety, depression, denial, and anger in the framework of a stage model. In addition, this paper will discuss specific societal aspects that can impact reaction and adjustment to disability. In this vein, we will examine the specific effects of societal attitudes and stigma upon individuals with disabilities. Strategies for changing attitudes and facilitating adjustment to disability will also be discussed.展开更多
An industrial mineral wollastonite (CaSiO3) was produced under solid state conditions from rice husk silica and limestone. Reaction was carried out at 900'C to 1300'C for 1 h. The product batches were subjecte...An industrial mineral wollastonite (CaSiO3) was produced under solid state conditions from rice husk silica and limestone. Reaction was carried out at 900'C to 1300'C for 1 h. The product batches were subjected to XRD and chemical analysis techniques specific for wollastonite. Mole fractions of different product batches were calculated on the basis of accumulated data to study the kinetics. Specific rate constants and reaction rate were also found out. Various probable models of mechanism for reaction were considered and testified with the laid down criterion for suggesting the suitable one. The resulting data were treated with Arrhenius equation as well and activation energy was calculated--therefrom. In addition to finding it's value from the slope of Arrhenius curve, an alternate method was also applied for this purpose. Both of the values were observed to be comparable. The activation energy required for performed reaction was found to be almost one third of that reported for synthesizing CaSiO3 by using quartz. This referred to the economical preparation of wollastonite by using rice husk as a source of silica instead of quartz.展开更多
Parathyroid hormone (PTH) secretion is characterized by an ultradian rhythm with tonic and pulsatile components. In healthy subjects, the majority of PTH is secreted in tonic fashion, whereas approximately 30% is se...Parathyroid hormone (PTH) secretion is characterized by an ultradian rhythm with tonic and pulsatile components. In healthy subjects, the majority of PTH is secreted in tonic fashion, whereas approximately 30% is secreted in low-amplitude and high-frequency bursts occurring every 10-20 min, superimposed on tonic secretion. Changes in the ultradian PTH secretion were shown to occur in patients with primary and secondary osteoporosis, with skeletal effects depending on the reciprocal modifications of pulsatile and tonic components. Indeed, pathophysiology of spontaneous PTH secretion remains an area potentially suitable to be explored, particularly in those conditions such as secondary forms of osteoporosis, in which conventional biochemical and densitometric parameters may not always give reliable diagnostic and therapeutic indications. This review will highlight the literature data supporting the hypothesis that changes of ultradian PTH secretion may be correlated with skeletal fragility in primary and secondary osteoporosis.展开更多
<strong>Background:</strong><span style="font-family:""><span style="font-family:Verdana;"> The diagnosis of unexplained infertility may be very frustrating for inferti...<strong>Background:</strong><span style="font-family:""><span style="font-family:Verdana;"> The diagnosis of unexplained infertility may be very frustrating for infertile couples and they show higher depression levels when compared to fertile couples. </span><b><span style="font-family:Verdana;">Aim: </span></b><span style="font-family:Verdana;">To assess the psychiatric aspects of Egyptian women with unexplained infertility. </span><b><span style="font-family:Verdana;">Methods: </span></b><span style="font-family:Verdana;">220 infertile women were included in this study (110 with unexplained infertility and 110 with explained infertility).</span><b> </b><span style="font-family:Verdana;">The psychiatric aspect of these women was evaluated using the translated and validated Hamilton Anxiety Rating Scale and the Beck Depression Inventory-II. </span><b><span style="font-family:Verdana;">Findings: </span></b><span style="font-family:Verdana;">The</span><b> </b><span style="font-family:Verdana;">number of women with mild depression was significantly higher in </span></span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">unexplained infertility group (47/110 (42.7%)) versus (22/110 (20%)) in </span><span style="font-family:Verdana;">the </span><span style="font-family:""><span style="font-family:Verdana;">explained infertility group (</span><i><span style="font-family:Verdana;">P</span></i></span><i><span style="font-family:""> </span></i><span style="font-family:Verdana;">=</span><span style="font-family:""> </span><span style="font-family:Verdana;">0.007). The number of women with moderate anxiety was significantly higher in </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">unexplained infertility group (26/110 (23.6%)) versus (8/110 (7.3%)) in </span><span style="font-family:Verdana;">the </span><span style="font-family:""><span style="font-family:Verdana;">explained infertility group (</span><i><span style="font-family:Verdana;">P</span></i></span><i><span style="font-family:""> </span></i><span style="font-family:Verdana;">=</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">0.003). </span><b><span style="font-family:Verdana;">Conclusion: </span></b><span style="font-family:Verdana;">The current study concluded that mild depression and moderate anxiety were significantly higher in </span></span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">unexplained infertility group. It is crucial to identify infertility women who are in need of psychological support and counseling during infertility treatment, because the psychological disturbance of the infertile women may affect the outcome of infertility treatment.</span>展开更多
Hematopoietic stem cell transplantation(HSCT)has become a conventional and potentially curative treatment for various hematological diseases.As more sophisticated procedures have been developed and mortality rates hav...Hematopoietic stem cell transplantation(HSCT)has become a conventional and potentially curative treatment for various hematological diseases.As more sophisticated procedures have been developed and mortality rates have decreased,attention has shifted to the psychosocial challenges associated with transplantation.The psychosocial difficulties accompanying transplantation are addressed in the context of both quality of life(QOL)and psychopathological research.Among the psychiatric comorbidities of HSCT,anxiety,depression,sleep and sexual disorders,delirium and post-traumatic stress disorder are the most studied conditions.Recently,more attention has been focused on the psychosocial burden of caregivers.Devising recommendations for the management of psychiatric symptoms and psychosocial interventions in HSCT sufferers and close relatives is a major concern to consultation–liaison psychiatrists and transplant teams.This review synthesizes and critically evaluates the current literature on the psychosocial aspects of HSCT and appraises the clinical significance of these outcomes.Issues of QOL assessment;psychosocial functioning and QOL in the course of HSCT;impact of graft-versus-host disease and other predictors of QOL and psychosocial functioning;comorbid psychiatric disorders;and interventions to maintain or improve QOL and reduce psychopathology and psychosocial burden on family members are presented.展开更多
文摘Objective: Describe the psychosocial aspects of male infertility at the hospital of the Sino-Guinean Friendship. Patients and method: It is a prospective study of a descriptive type covering a period of 6 months. The study covered 17 patients, all received for a desire to conceive after at least one year of regular sexual intercourse without contraception. The data were collected from patient interviews using a pre-established questionnaire. Results: The average age of the patients was 32.07 years with extremes of 23 years and 42 years. During this study, 64.70% of patients were no longer participating in community ceremonies. The patients’ relationships with their spouse and family deteriorated in 52.94% and 47.06%, respectively. Conversely, relations with the family of origin remained unchanged in 70.59 percent of cases. The reduction in economic activity was by 13 patients (76.48%). Conclusion: Male infertility causes a real psychic earthquake in men with its corollaries of negative feelings. The rather complex moral repercussions of male infertility affect not only the individual, his/her partner, and family, but also economic activity.
文摘Background:Social distancing may affect athletes,training,causing negative effects on mental and physical health.Objective:This study therefore aimed to characterize the perception of Brazilian athletes about their physical and psychosocial aspects,sleep quality and coping strategies during the quarantine of the coronavirus disease 2019(COVID-19)pandemic.Methods:This was a cross-sectional study with online survey,performed with Brazilian athletes(amateur and professional)over 18 years.The main outcomes measures assessed were physical and psychosocial aspects,sleep quality and coping strategies.Results:A total of 214 athletes were included.The average weekly hours of training during the quarantine was 4.71±3.71 h,of which 64.5%athletes(138/214)were oriented by medical staff during training.For 52.8%(113/214)of athletes,training intensity during the quarantine was different/very different from the intensity before the quarantine.79.4%athletes(170/214)reported moderate to extreme difficulties in keeping the same level of training during the quarantine.77.1%athletes(165/214)had moderate to extreme anxiety and each of the athletes had concern about his or her athletic career future,including return to the sport.72.9%athletes(156/214)reported change in sleep schedule during the quarantine period.Conclusion:The quarantine period during COVID-19 pandemic negatively affected the athlete^perception about training routine,since athletes reported reduction in training hours and training intensity.Overall,the athletes reported that they were moderately to extremely anxious.They also had concerns about their career in the future,as well as concerns regarding return to sport.
文摘Aspect’s extraction is a critical task in aspect-based sentiment analysis,including explicit and implicit aspects identification.While extensive research has identified explicit aspects,little effort has been put forward on implicit aspects extraction due to the complexity of the problem.Moreover,existing research on implicit aspect identification is widely carried out on product reviews targeting specific aspects while neglecting sentences’dependency problems.Therefore,in this paper,a multi-level knowledge engineering approach for identifying implicit movie aspects is proposed.The proposed method first identifies explicit aspects using a variant of BiLSTM and CRF(Bidirectional Long Short Memory-Conditional Random Field),which serve as a memory to process dependent sentences to infer implicit aspects.It can identify implicit aspects from four types of sentences,including independent and three types of dependent sentences.The study is evaluated on a largemovie reviews dataset with 50k examples.The experimental results showed that the explicit aspect identification method achieved 89%F1-score and implicit aspect extraction methods achieved 76%F1-score.In addition,the proposed approach also performs better than the state-of-the-art techniques(NMFIAD andML-KB+)on the product review dataset,where it achieved 93%precision,92%recall,and 93%F1-score.
文摘Principles which teachers should adhere to in second language class are based on the synthesis of linguistic,cultural and competent aspects.This paper first puts forward linguistic,cultural and competent aspects of second language teaching.Then,the principles which teachers should adhere to in second language class are introduced.Finally,the synthesis implication for second language teaching is presented.
文摘目的探讨ASPECTs评分联合ASITN/SIR侧支循环评分模式评估前循环急性大动脉脑梗死患者超时间窗血管内治疗的临床效果。方法收集52例超时间窗急性大动脉闭塞脑梗死患者为研究组,以本中心63例标准治疗窗内患者为对照组,在三系统同轴下使用颅内血栓抽吸系统、支架取栓装置进行机械取栓治疗,纵向对比2组术后90 d良好恢复率(mRS≤2分)、安全性(症状性颅内出血转化、病死率),研究组间横向对比有效性,主要对比手术前后NIHSS评分。结果研究组与对照组患者术前NIHSS评分差异无统计学意义(P>0.05)。研究组与对照组术中mTICI分级血管再通率分别为90.4%(47/52)、92.1%(58/63),2组比较差异无统计学意义(P>0.05);2组术后良好恢复率(90 d mRS≤2分)[分别为42.3%(22/52)、40%(25/63)]、安全性[研究组症状性颅内出血转化、病死率分别为13.5%(7/52)、15.4%(8/52),对照组分别为11.1%(6/63)、12.7%(8/63)],2组比较差异均无统计学意义(P>0.05)。结论在ASPECTs评分联合ASITN/SIR侧支循环评估模式下急性缺血性脑卒中超时间窗血管内治疗临床疗效具有可行性。
文摘Cancers, malignant melanoma and sarcomas of the skin represent the most common group of malignancies in humans. The main treatment method of almost all skin cancers and subcutaneous tissue tumours is surgery, which consists of complete removal of a neoplastic lesion, with an adequate margin of healthy tissue. Radiotherapy plays an adjuvant role in this process, meaning complementing of the surgical procedure. This study compared four methods of irradiation treatment of cancer located in the skin or in subcutaneous tissues: contact brachytherapy, conventional orthovoltage therapy, electron beam conformal teleradiotherapy and IMRT dynamically shaped photonic beams conformal teleradiotherapy. In order to compare the methods and techniques of surface radiotherapy, following specific objectives were formulated. At the beginning in order to compare the scopes of the absorbed doses at different tissue depths, an analysis of parameters describing particular beams or radiation source has been performed—the curves for the absorbed-dose depth drop-offs. Doses distribution in tissue-like phantoms stimulating homogeneous cuboidal tissue block has been determined. A quality comparison of dose distribution in 2D and 3D treatment planning system for contact brachytherapy application has been made. The dose distribution for electron beam in the system has been determined. Conformal plannings for electron beam treatment, contact brachytherapy applicator treatment and 4 photon beams treatment optimized in IMRT technology have been performed. Dose distribution has been performed for the irradiated female patient within the well chest—the target included the recurrence area in the post-operative scar. The radiation therapy with X-rays has actually been completely eliminated from skin cancer and subcutaneous tissue radiotherapy by the electrons generated in linear accelerators, contact brachytherapy HDR and by high-energy photons used in conformal techniques, ex. IMRT. It is because the residual dose beyond the target is the highest for single X-ray beam. Although in brachytherapy HDR a rapid dose drop-off is observed, 5 cm from its normalization level for the target the residual radiation remains at the level of several percent. So, both X-rays beam radiation and brachytherapy in skin cancer treatment is connected with the administration of the dose with a high gradient in the health tissues. The dose distribution for photon conformal techniques IMRT or for electron radiation looks different. There with the dose normalization at the level of 90% or 85% we deal with the dose layer, the division does not exceed 15% of heterogeneity.
文摘This study investigates the dominant modes of variability in monthly and seasonal rainfall over the India-China region mainly through Empirical Orthogonal Function (EOF) analysis. The EOFs have shown that whereas the rainfall over India varies as one coherent zone, that over China varies in east-west oriented bands. The influence of this banded structure extends well into India.Relationship of rainfall with large scale parameters such as the subtropical ridge over the Indian and the western Pacific regions, Southern Oscillation, the Northern Hemispheric surface air temperature and stratospheric winds have also been investigated. These results show that the rainfall over the area around 40°N, 110°E over China is highly related with rainfall over India. The subtropical ridge over the Indian region is an important predictor over India as well an over the northern China region. '
文摘Schizophrenia is a severe mental illness which is associated with significant consequences for both the patients and their relatives. Due to chronicity of the illness, the relatives of patients of schizophrenia have to bear the main brunt of the illness. Studies across the world have evaluated various aspects of caregiving and caregivers such as burden, coping, quality of life, social support, expressed emotions, and psychological morbidity. In general the research has looked at caregiving as a negative phenomenon, however, now it is increasingly recognised that caregiving is not only associated with negative consequences only, also experience subjective gains and satisfaction. This review focus on the conceptual issues, instruments available to assess the positive aspects of caregiving and the various correlates of positive aspects of caregiving reported in relation to schizophrenia. The positive aspect of caregiving has been variously measured as positive caregiving experience, caregiving satisfaction, caregiving gains and finding meaning through caregiving scale and positive aspects of caregiving experience. Studies suggests that caregivers of patients with schizophrenia and psychotic disorders experience caregiving gains(in the form of becoming more sensitive to persons with disabilities, clarity about their priorities in life and a greater sense of inner strength), experience good aspects of relationship with the patient, do have personal positive experiences. Some of the studies suggest that those who experience greater negative caregiving experience also do experience positive caregiving experience.
文摘Peanut is an energy dense food item and it contains a substantial amount of fat,proteins,carbohydrate,both fat soluble and water soluble vitamins,minerals and phytochemicals.Peanuts are consumed worldwide due to its high nutritional value and pleasant or unique flavor after roasting or boiling.The lipid,protein and carbohydrate not only provide energy,but also provide essential nutrients for normal body functions such as body fat and muscle buildup.Vitamins are needed for normal cell function,growth,development,disease prevention and act as coenzymes during the production of energy.Due to the high nutrient contents of peanuts,they have been used to combat malnutrition in most developing countries.Epidemiologic studies have associated nut consumption with a reduced incidence of cardiovascular heart diseases and gallstones in both genders and diabetes in women.Limited evidence also suggests beneficial effects on hypertension,cancer,and inflammation.The health risk associated with peanut consumption is allergy in developed countries.The review discusses the health aspects,including allergy,of peanut consumption as they related to the chemical composition of peanuts using literatures published in past two decades with exceptions of a few older articles.
文摘The hydrothermal behavior of air inside a solar channel heat exchanger equipped with various shaped ribs is analyzed numerically.The bottom wall of the exchanger is kept adiabatic,while a constant value of the temperature is set at the upper wall.The duct is equipped with a flat rectangular fin on the upper wall and an upstream V-shaped baffle on the lower wall.Furthermore,five hot wall-attached rib shapes are considered:trapezoidal,square,triangular pointing upstream(type Ⅰ),triangular pointing downstream(type Ⅱ),and equilateral-triangular(type Ⅲ)cross sections.Effects of the flow rates are also inspected for various Reynolds numbers in the turbulent regime(1.2×10^(4)-3.2×10^(4)).The highest performance(η)value is given for the Ⅱ-triangular rib case in all Re values,while the square-shaped ribs show a significant decrease in the η along the achieved Re range.The η value at Remax is 2.567 for the Ⅱ-triangular roughness case.Compared with the other simulated cases,this performance is decreased by about 3.768%in the case of Ⅰ-triangular ribs,15.249% in the case of Ⅲ-triangular ribs,20.802% in the case of trapezoidal ribs,while 27.541% in the case of square ribs,at the same Remax.Also,a comparison ismade with air-heat exchangers that have non-rough walls and contain cross-shaped VGs presented previously,in order to highlight the effectiveness of the rough surface presence in the baffled and finned channels.The obtained results indicated that the triangular-shaped rib(type Ⅱ)has the most significant hydrothermal behavior than the other cases.This indicates the necessity of roughness heat transfer surfaces for finned and baffled channels to improve significantly the performance of the air-heat exchangers they contain.
文摘A method of dealing with two-target problem in terms of coordinate transformation and differential game is presented in this paper. It has analysed the capture region, escape region and danger region. This approach is helpful to a pilot to possess the favourable position in an air-to-air combat in plane.
文摘In this paper, we will address common psychological reactions to disability such as anxiety, depression, denial, and anger in the framework of a stage model. In addition, this paper will discuss specific societal aspects that can impact reaction and adjustment to disability. In this vein, we will examine the specific effects of societal attitudes and stigma upon individuals with disabilities. Strategies for changing attitudes and facilitating adjustment to disability will also be discussed.
文摘An industrial mineral wollastonite (CaSiO3) was produced under solid state conditions from rice husk silica and limestone. Reaction was carried out at 900'C to 1300'C for 1 h. The product batches were subjected to XRD and chemical analysis techniques specific for wollastonite. Mole fractions of different product batches were calculated on the basis of accumulated data to study the kinetics. Specific rate constants and reaction rate were also found out. Various probable models of mechanism for reaction were considered and testified with the laid down criterion for suggesting the suitable one. The resulting data were treated with Arrhenius equation as well and activation energy was calculated--therefrom. In addition to finding it's value from the slope of Arrhenius curve, an alternate method was also applied for this purpose. Both of the values were observed to be comparable. The activation energy required for performed reaction was found to be almost one third of that reported for synthesizing CaSiO3 by using quartz. This referred to the economical preparation of wollastonite by using rice husk as a source of silica instead of quartz.
文摘Parathyroid hormone (PTH) secretion is characterized by an ultradian rhythm with tonic and pulsatile components. In healthy subjects, the majority of PTH is secreted in tonic fashion, whereas approximately 30% is secreted in low-amplitude and high-frequency bursts occurring every 10-20 min, superimposed on tonic secretion. Changes in the ultradian PTH secretion were shown to occur in patients with primary and secondary osteoporosis, with skeletal effects depending on the reciprocal modifications of pulsatile and tonic components. Indeed, pathophysiology of spontaneous PTH secretion remains an area potentially suitable to be explored, particularly in those conditions such as secondary forms of osteoporosis, in which conventional biochemical and densitometric parameters may not always give reliable diagnostic and therapeutic indications. This review will highlight the literature data supporting the hypothesis that changes of ultradian PTH secretion may be correlated with skeletal fragility in primary and secondary osteoporosis.
文摘<strong>Background:</strong><span style="font-family:""><span style="font-family:Verdana;"> The diagnosis of unexplained infertility may be very frustrating for infertile couples and they show higher depression levels when compared to fertile couples. </span><b><span style="font-family:Verdana;">Aim: </span></b><span style="font-family:Verdana;">To assess the psychiatric aspects of Egyptian women with unexplained infertility. </span><b><span style="font-family:Verdana;">Methods: </span></b><span style="font-family:Verdana;">220 infertile women were included in this study (110 with unexplained infertility and 110 with explained infertility).</span><b> </b><span style="font-family:Verdana;">The psychiatric aspect of these women was evaluated using the translated and validated Hamilton Anxiety Rating Scale and the Beck Depression Inventory-II. </span><b><span style="font-family:Verdana;">Findings: </span></b><span style="font-family:Verdana;">The</span><b> </b><span style="font-family:Verdana;">number of women with mild depression was significantly higher in </span></span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">unexplained infertility group (47/110 (42.7%)) versus (22/110 (20%)) in </span><span style="font-family:Verdana;">the </span><span style="font-family:""><span style="font-family:Verdana;">explained infertility group (</span><i><span style="font-family:Verdana;">P</span></i></span><i><span style="font-family:""> </span></i><span style="font-family:Verdana;">=</span><span style="font-family:""> </span><span style="font-family:Verdana;">0.007). The number of women with moderate anxiety was significantly higher in </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">unexplained infertility group (26/110 (23.6%)) versus (8/110 (7.3%)) in </span><span style="font-family:Verdana;">the </span><span style="font-family:""><span style="font-family:Verdana;">explained infertility group (</span><i><span style="font-family:Verdana;">P</span></i></span><i><span style="font-family:""> </span></i><span style="font-family:Verdana;">=</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">0.003). </span><b><span style="font-family:Verdana;">Conclusion: </span></b><span style="font-family:Verdana;">The current study concluded that mild depression and moderate anxiety were significantly higher in </span></span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">unexplained infertility group. It is crucial to identify infertility women who are in need of psychological support and counseling during infertility treatment, because the psychological disturbance of the infertile women may affect the outcome of infertility treatment.</span>
文摘Hematopoietic stem cell transplantation(HSCT)has become a conventional and potentially curative treatment for various hematological diseases.As more sophisticated procedures have been developed and mortality rates have decreased,attention has shifted to the psychosocial challenges associated with transplantation.The psychosocial difficulties accompanying transplantation are addressed in the context of both quality of life(QOL)and psychopathological research.Among the psychiatric comorbidities of HSCT,anxiety,depression,sleep and sexual disorders,delirium and post-traumatic stress disorder are the most studied conditions.Recently,more attention has been focused on the psychosocial burden of caregivers.Devising recommendations for the management of psychiatric symptoms and psychosocial interventions in HSCT sufferers and close relatives is a major concern to consultation–liaison psychiatrists and transplant teams.This review synthesizes and critically evaluates the current literature on the psychosocial aspects of HSCT and appraises the clinical significance of these outcomes.Issues of QOL assessment;psychosocial functioning and QOL in the course of HSCT;impact of graft-versus-host disease and other predictors of QOL and psychosocial functioning;comorbid psychiatric disorders;and interventions to maintain or improve QOL and reduce psychopathology and psychosocial burden on family members are presented.